Optimisation of turning parameters of Inconel 718 alloy using RSM

M. Aruna and V. Dhanalakshmi

International Journal of Manufacturing Technology and Management, 2012, vol. 25, issue 1/2/3, 113-134

Abstract: Nickel-based super alloy, Inconel 718 is extensively used in sophisticated applications due to its unique properties desired for engineering applications. Due to its peculiar characteristics, machining of Inconel 718 is complicated and costly. The present work is an attempt to make use of Taguchi optimisation technique to optimise cutting parameters during high speed turning of Inconel 718 using cermet tool. The performance of the cermet tool is described using response surface methodology (RSM). The experimental plan is based on central composite design (CCD). Surface roughness and flank wear are the response variables investigated. The experimental results indicate that the proposed mathematical models suggested could adequately describe the performance indicators within the limits of the factors that are being investigated. The cutting speed is the most significant factor that influences the surface roughness and flank wear. Yet, there are other factors that provide secondary contributions to the performance indicators. The adequacy of the predictive model is verified using analysis of variance.

Keywords: Inconel 718 alloys; cermets; response surface methodology; RSM; high speed turning; parameter optimisation; nickel; superalloys; Taguchi methods; cutting parameters; high speed machining; central composite design; CCD; mathematical modelling; cutting speed; surface roughness; flank wear; analysis of variance; ANOVA. (search for similar items in EconPapers)
Date: 2012
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